Boris Johnson warned Brexit voters that voting for Labour could see Britain remain in the EU

The foreign secretary, who was the hero of the Vote Leave campaign in the referendum, gave his stark message as he was deployed in Dagenham and Rainham which is one of dozens where pro-EU Labour MPs have been kept in with a divided Brexit vote between the Tories and Ukip.

The charismatic former London Mayor, who was mobbed by voters wanting selfies and to shake his hand, arrived with the message a direct message to former Ukip voters: "The only way to get the job done is to vote Conservative".

And he warned that if Mr Corbyn scrapes into power on the back of a “coalition of chaos” with Nicola Sturgeon’s SNP and Tim Farron’s Lib Dems it could mean “there is a very real risk” that Brexit could be reversed and Britain stays in the EU.

He said: "Corbyn will have two parrots squawking in his ears on his shoulders, a yellow Tim Farron parrot and a Scottish Sturgeon parrot.

“He won’t be able to get anything done and will be too weak to negotiate a good deal."

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Boris claimed Jeremy is 'too weak to negotiate a good deal' for Britain

Labour won’t say what they want to do to take us out of the EU. They have no plan.

His attack came as Mr Corbyn appeared to suggest that he is considering a “confidence and supply” arrangement with the Lib Dems and SNP where they would prop up his hard Left government in exchange for a rerun of the EU and Scottish independence referendums.

Mr Johnson said that a controversial Yougov poll which suggests the Conservatives could lose seats, allowing Mr Corbyn into power with the support of Leftwing minor parties “shows why people need to get out and vote Conservative to make sure that doesn’t happen.”

He also made it clear that Theresa May’s government would take a tough line on the EU negotiations and not pay an exit but will demand Britain’s money back.

Boris warned residents from Dagenham and Rainham that backing UKIP will help Jeremy win the election

He went on: “Labour won’t say what they want to do to take us out of the EU. They have no plan.”

He added: “Jeremy Corbyn even has a secret plan to increase immigration not to bring it down.”

Dagenham saw 62 per cent vote for Leave with anger over Brussels fueled by high levels of immigration hitting wages and housing meaning that people in the London borough has a 50 year wait for a council house.

There was also anger at the way the EU gave an £80 million loan to Ford to move vehicle manufacturing away from Dagenham to Turkey causing the loss of hundreds of skilled jobs in the area.

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Despite all this the local Labour MP Jon Cruddas, who nominated Jeremy Corbyn for the leadership, backed Remain.

However, in the 2015 election Mr Cruddas was re-elected with a majority of 4,980 because the anti-Labour vote split 12,850 to Ukip and 10,492 to the Tories.

Ukip are targeting the seat but with the national share of the vote collapsing, the Conservatives believe that they can win it if the Brexit vote united behind their candidate Julie Marson.

Mrs Marson said: “We are getting a fantastic response.

“People here voted overwhelmingly for Brexit and remember John Cruddas backed Remain and also nominated Jeremy Corbyn. It really is all to play for.”